FloydTriangle.java

public class FloydTriangle {

    public static void printTriangle(int rows){
        if(rows<=0)
            return;

        int count=1;
        int number = 1;
        while(count<=rows){
            for (int i = 0; i <count ; i++) {
                System.out.print(number + " ");
                number++;
            }
            count++;
            System.out.println();
        }
    }

    public static void main(String[] args) {
        int rows = 7;
        printTriangle(rows);
    }
}